Radiojack



May 10 1927. 1,627,823

R. M. c. R. AUGUST RADIOJAOK Filed Feb. s, 1925 Q 0 g1 gay- 25 2a avweutoz Patented May 10, 1927.

UNITED STATES I PAT ENzT" Q-FFI'CiEi.

I RALPH M. C. R. AUGUST, OF GREAT KILLS,'1\TEW' YQRK, ASSIGNOR, BY M'ESNE .AIS-r SIGNMENTS, T0 L. A'. FLORENCE, 0F TEANECK,. NEW JERSEY.

RADIOJACK.

Application filed February My invention relates to improvements in radio acksor radio switches so called, which is in effect a simple form of jack or switch; The object of my invention is to produce a very cheap, simple, exceedingly effective jack having its contacts arranged so as to produce a structure of the low capacity class in which the contacts insteadof having their broad sides opposed, are arranged edge to edge. The invention. is also. intended to produce a structure which while exceedingly effective, is much cheaper than the ordinary and to this end I make the insulating body of such shape that it can be readily molded of hard rubber or other suitable insulating substance. Furthermore, I- can mold a body of thiskind with a middle slot having inclined wallswhich serve as a sub stantial and yet simple and inexpensive guide for a plug. My invention isalsointended to produce a very simple and effective jack which can be cheaply and securely attached to a supporting panehand in which the means of attachment also serves asa guide to the jack plug; These and other advantages will appear more clearly from the description which follows.

Reference is to be had tothe accompanying drawings forming a partof this specification, in which similar reference charactors indicate corresponding parts in all the views.

Figure 1 is a my invention.

Figure 2 is a longitudinal section-thereof.

Figure 3 isa. plan of a: slightly modified form of jack, and

Figure 4 is a cross section of. the jack shown in Figure 3.

plan of the jackembodying The structure is provided with an insulating body 10 which is preferably flat and rectangular, but which irrespective of its general contour is provided" with a central slot 11 extending from near one end of the body to the other end edge thereof, forming a. fork-like body, and this slot has inc-lined walls 12 which make it serve nicely as a guide for the plug hereinafter referred to.

The general fork shape of the jack body with its slot as described, is important because in many structures of this kind the body has to be bored out or molded in an expensive way, whereas in the form shown the jack body and straps 1'4 serve to firmly unite the body and straps, and the union is stronger because the end of the body fits snugly against the bracket plate 18'. This plate 13 also abuts on its inner side with the flange 16 of a bushing 16 which is adapted to extend through the panel 17 or similar support, and the outer part is screw thread.- ed as shown at 18 so as: to receive the fastening nut 19', and thus the jack can be easily put in place and firmly secured, as the panel will be grippedbetween the abutting bracket plate 13 and the'nut 1921s shown in Figure 2.

With a body of this kind it is a simple thing to attach the contacts so that they will liesubstantially edge toedge, and thus come within the low capacity class ofjacks. As shown in Figures 1- and 2' I have provided crossing contacts20 and 21 which are separated at the-point of crossing; by insulation 22, and which are secured at one end by screw bolts 23 and23 which at the opposite side may be connected upas desired", and the freei'ends of the spring contacts 20 and. 21 abut with the contact screws 24 and 24:, which also may be connected as desired.

Spaced apart from these contact springs 20 and 21 and like them lying flatwise on the jack and across the slot 11, is another contact spring 25 which is secured by a screw bolt 26 extending througlrthe jack body, and contactswith screw bolt 27 on the opposite side of. the body. I have not. referred to the connections of. these contacts, because obviously they may be the usual or any preferred connections, but the important thing is that they are arranged with their edges opposite each other and in such a way that they normally make contact with their respective contact screws, but can connect as usual with the plug 27 which moves as usual longitudinally of the jack, and has the customary or any preferred connections.

In Figures 3 and 4 I have shown a slightly different arrangement of contacts in which the shape is so simple and so easy to forminstead of the crossing contacts 20 and 21,

I substitute a flat contact spring 31 which is secured to the body 10 by a screw bolt 32 which can be connected in any preferred way, and at the free end the contact spring can contact with a screw bolt 33 which likewise can be connected as desired. Parallel with the flat contact 31 is a flat contact spring 34- which is spaced apartfrom it and connected with a screw bolt 35, passing through the body 10, while its free end contacts with a screw bolt 36 which may be connected as desired.

The plug 27 as shown is a conventional plug, and is only referred to in a general way as it has the customary means for connections. At its inner end it has a knob- 28 to contact with a spring contact 20 or 31 as the case may be, and the knob is insulated from the body of the plug as shown at 29, and has the internal insulated stem 29 as usual. It also has the customary or any preferred head 30 through which the connections are made with the stem 29 orbody of the plug, as desired. The means for making these connections is not new, and is so well known that said means is not illustrated, the important feature of this invention being the structure of the body 10 to enable it to be cheaply and easily made, the means for attaching it to a panel, and guiding the plug, and the arrangement of the flat contacts edge to edge on the slotted body.

I claim 1. A device of the kind described comprising a jack having a recessed body, the walls of said recess being inclined, spring con tacts crossing the recess transversely thereof, and a plug movable in the recess and guided by said inclined walls and arranged to contact with the aforesaid spring contacts.

2. A device of the kind described comprising a jack having a longitudinally slotted body, contact springs arranged edge to edge and crossing the slot of the body transversely thereof, means for securing the body on a support, and a plug sliding in the slot and engaging the contact springs.

A device of the kind described comprising a ja ck having a longitudinallyslotted body with the walls of the slot inclined, flat contact springs arranged edge to edge and extending across the body. and a plug movable in the slot and guided on the aforesaid inclined walls, said plug being arranged to make contact with the contact springs.

4. A device of the kind described comprising a jack having a flat slotted insulating body with inclined walls for the slot, contact springs secured on the body and crossing the slot, said contact springs being arranged edge to edge, and a plug guided on the inclined walls of the slot and arranged to engage the contact springs.

5. A device of the kind described comprising a jack having a longitudinally slotted body, a bracket connected to one end of the body and provided with a bushing threadedto receive a nut, and a plug slidable through the bushing and into said slotted body for contacting with the aforesaid contact springs.

6. A device of the kind described comprising a jack having a flat insulating bifur cated body, the walls to the slot having inclined contact springs arranged edge to edge and spanning the slot, a bracket at the open end of the body having means for attachment to the body, a threaded bushing connected with the bracket and adapted to extend through a support and receive a nut, and a plug slidable through the bushing and on the inclined walls of the slotted body, said plug connecting with the aforesaid contact springs.

7. A device of the kind described comprising a jack having a flat bifurcated insulating body with inclined walls to the slot therein, fiat contacts spaced apart and spanning the slot, said contacts being arranged edge to edge, a plug slidable in the slot and guided by said inclined wall to make connection with said contacts, and means for securing said body to a supporting panel.

8. A flat slotted insulating radio jack body having flat contacts edge to edge crossing the slot of the body transversely thereof.

9. A flat slotted insulating radio jack body, spaced fiat contacts crossing the slot of the body transversely thereof and arranged edge to edge, and means for securing the body endwise to a support.

In testimony whereof, I have signed my name to this specification this 29th day of January, 1925.

RALPH M. C. R. AUGUST. 

